debug: add a 'debugdownload' command
This command resolve and fetch and URL through the Mercurial logic. Mercurial
logic add various headers (including authentication) while resolving an URL so
the commands helps with building the same request Mercurial would be doing.
A new test file is created because we'll add more logic regarding Mercurial
download logic and it will grow to a reasonable size.
--- a/mercurial/debugcommands.py Sat Apr 01 17:12:48 2017 +0900
+++ b/mercurial/debugcommands.py Fri Dec 15 09:30:16 2017 +0100
@@ -69,6 +69,7 @@
templater,
treediscovery,
upgrade,
+ url as urlmod,
util,
vfs as vfsmod,
)
@@ -786,6 +787,30 @@
localrevs = opts['rev']
doit(localrevs, remoterevs)
+_chunksize = 4 << 10
+
+@command('debugdownload',
+ [
+ ('o', 'output', '', _('path')),
+ ],
+ norepo=True)
+def debugdownload(ui, url, output=None, **opts):
+ """download a resource using Mercurial logic and config
+ """
+ fh = urlmod.open(ui, url, output)
+
+ dest = ui
+ if output:
+ dest = open(output, "wb", _chunksize)
+ try:
+ data = fh.read(_chunksize)
+ while data:
+ dest.write(data)
+ data = fh.read(_chunksize)
+ finally:
+ if output:
+ dest.close()
+
@command('debugextensions', cmdutil.formatteropts, [], norepo=True)
def debugextensions(ui, **opts):
'''show information about active extensions'''
--- a/tests/test-completion.t Sat Apr 01 17:12:48 2017 +0900
+++ b/tests/test-completion.t Fri Dec 15 09:30:16 2017 +0100
@@ -85,6 +85,7 @@
debugdeltachain
debugdirstate
debugdiscovery
+ debugdownload
debugextensions
debugfileset
debugformat
@@ -263,6 +264,7 @@
debugdeltachain: changelog, manifest, dir, template
debugdirstate: nodates, datesort
debugdiscovery: old, nonheads, rev, ssh, remotecmd, insecure
+ debugdownload: output
debugextensions: template
debugfileset: rev
debugformat: template
--- a/tests/test-help.t Sat Apr 01 17:12:48 2017 +0900
+++ b/tests/test-help.t Fri Dec 15 09:30:16 2017 +0100
@@ -919,6 +919,8 @@
show the contents of the current dirstate
debugdiscovery
runs the changeset discovery protocol in isolation
+ debugdownload
+ download a resource using Mercurial logic and config
debugextensions
show information about active extensions
debugfileset parse and apply a fileset specification
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-url-download.t Fri Dec 15 09:30:16 2017 +0100
@@ -0,0 +1,36 @@
+#require serve
+
+ $ hg init server
+ $ hg serve -R server -p $HGPORT -d --pid-file=hg1.pid -E ../error.log
+ $ cat hg1.pid >> $DAEMON_PIDS
+
+Check basic fetching
+
+ $ hg debugdownload "http://localhost:$HGPORT/?cmd=lookup&key=tip"
+ 1 0000000000000000000000000000000000000000
+ $ hg debugdownload -o null.txt "http://localhost:$HGPORT/?cmd=lookup&key=null"
+ $ cat null.txt
+ 1 0000000000000000000000000000000000000000
+
+Check the request is made from the usual Mercurial logic
+(rev details, give different content if the request has a Mercurial user agent)
+
+ $ get-with-headers.py --headeronly "localhost:$HGPORT" "rev/tip" content-type
+ 200 Script output follows
+ content-type: text/html; charset=ascii
+ $ hg debugdownload "http://localhost:$HGPORT/rev/tip"
+
+ # HG changeset patch
+ # User
+ # Date 0 0
+ # Node ID 0000000000000000000000000000000000000000
+
+
+
+
+
+Check other kind of compatible url
+
+ $ hg debugdownload ./null.txt
+ 1 0000000000000000000000000000000000000000
+